package com.qf;

import com.qf.pojo.User;
import com.qf.service.AdminService;
import com.qf.service.AdminServiceImpl;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author 孙亚梅
 * @version V1.0
 * @Project javase2203
 * @Package com.qf.controller
 * @Description:
 * @Date 2022/5/20 20:54
 */

@WebServlet("/admin")
public class AdminController extends  BaseServlet{
    /**
     * 管理员登录
     * @param request
     * @param response
     * @return
     */
    public String login(HttpServletRequest request, HttpServletResponse response){

        //1：获取参数
        String username = request.getParameter("username");
        String password =  request.getParameter("password");

        //2：判断用户密码不为空，如果为空跳转到登录页面
        if (username == null || password == null){
            return "redirect:"+request.getContextPath()+"/admin/login.jsp";

        }
      //3：调用service 校验用户名密码
        AdminService adminService = new AdminServiceImpl();
         User user= adminService.login(username,password);

        //4:根据结果判断进行重定向操作
        if (user != null){
            //5：将登录成功后的用户对象放入tomcat的session会话中一直携带
            request.getSession().setAttribute("admin", user);
            //跳转到管理员首页   重定向：redirect
            return "redirect:"+request.getContextPath()+"/admin/admin.jsp";
        }else {
            //用户名，密码不正确，跳转到登录页面重新登录
            return "redirect:" +request.getContextPath()+"/admin/login.jsp";
        }

    }
}
